Roll for street



(No Model.) 2 SheetsSheet l.

A. J. MOXHAM.

ROLL FOR STREET GIRDER RAILS.

No. 821,627. Patented July '7, 1885.

I 1 I m I WITNESSES I mmvrm M Z fig (No Model.) 2 Sheets-Sh'eet 2.

A. J. MOXHAM.

ROLL FOR STREET GIRDER RAILS.

No. 321,627 Patented July 7, 1885.

UuiTEn dTnTEs PATENT @EETbE.

ARTHUR J. MOXHAM, OF JOHNSTOXVN, PENNSYLVANIA.

ROLL FOR STREET GlRDER=RAlLS.

QL ECIPICATIOLT rag-ling part of Letters Patent No. 321,627, dated July 7, 1885.

Application died April 29, 1885.

T0 (ZZZ whom, it may concern:

Be it known that I, ARTHUR J. Moxnnnr, of Johnstowu, in the county of Oambria and State of Pennsylvania, have invented a new and useful Improvement in Rolling Girder-Rails for Street-Railways, which invention or improvement is fully set forth and illustrated in the following specification and accompanying drawings.

The object of this invention is to provide a small number of sets of rolls in train, capable of rolling at least three forms of girder-rails, and thus to avoid entirely any change of rolls, whether all or any of said rails be rolled The invention consists in certain groupings of passes in the several sets of rolls, so that the metal for different forms of rails, after being put through a number of passes to form a bar or rail of primary shape, is thereafter rolled through other and different special passes, according to the special form of rail desired.

In the accompanying drawings Figure 1 illustrates one set of rolls provided with passes numbered from 1 to 6, inclusive. Fig. 2 illustrates a second set of rolls provided with passes numbered from 7 to 13, inclusive. Of said passes all are side passes except Nos. 2 and a, which are dummy passes.

The rolls A and B, respectively upper and lower rolls, illustrate sets of rolls two high, but may be made three high, if preferred. In said rolls passes Nos. 9, 11, and 13 are all passes for making rails of finished forms of oross-section-that is, if desired, a rail having the crosssection indicated by pass No. 9 may be rolled from the bloom by commencing at pass No. 1 and successively rolling the metal in each pass until No. 9, inclusive, is

reached and the metal run through it, when the rail thus rolled may be put to any use required; but if either of the forms of rails indicated by the passes Nos. 11 and 13 be desired, then the rail just turned out of No. 9 serves as a primary form out of which either of the forms of rails indicated by said passes Nos. 11 and 13 is to be rolled.

The whole operation of rolling for all three of said forms of rails is as follows: If it be desired to roll a girder-rail having the shape or form of crossscction indicated by pass No. 9,.

(No model.)

the hot'metal bloom of either iron or steel is first run through pass No. 1, then through each succeeding pass up to No. 9, inclusive, the bar thus formed being rolled upon its side in all of said passes, except in passes Nos. 2 and 4, in which, being dummy passes, it is rolled on the fiat." This operation so far completes one finished form of rail indicated by pass No. 9, as hereinbefore explained.

If it be desired to roll a center-bearing girder-rail having the shape or form of cross section indicated by pass No. 11, the shape as formed in pass No. 9, ceasing to be regarded as afinished rail, is immediately thereafter run in and through pass No. 10, the effect of which pass is to partially elongate the metal previously formed at the point a, No. 9, by rolling it out into the shape shown at a, No. 10, at the same time partially elongating by rolling or reducing in thickness the pointb, previously formed in No. 9, to theshape shown at Z), No. 10, and also at the same time partially displacing the point Z) and throwing it nearer into line with the pointb, No. 10. This specially described act-ion is further continued by the same models opermzdi in the changes effected by the next rolling in pass N0. 11- that is to say, the point a is further elongated, as shown, to the shape a, and the point 6 further partially elongated and partially displaced to the point Zr,the result being the finished rail indicated in cross-section by pass No. 11. It will be here observed that at the same time in No. 11 a suificient amount of draft or work is distributed over the rest of the surface or whole contour of the girdersection to reduce any tendency in the rail to warp or twist to a minimum or to not exceed practical limits.

If it be desired to roll a side-bearing girderrail having the shape or form of cross-section indicated by pass No. 13, the shape as formed in pass No. 9, ceasing to be regarded as a finished rail, is immediately thereafter run in and through pass No. 12, the effect of which pass, it will be noted, is that the point- I), previously formed in N0. 9, will be partially displaced by being thrown over nearly in line with the point e in Nos. 9 and 12, and also partially elongated by being rolled down at the same point as shown at b, No. 12. The further from pass No. 13 having a form of cross-sec tion indicated by said pass.

In said passes Nos. 12 and 13, as already described in passes Nos. 10 and 11, there is also sufficient draft or work distributedover the whole contour or surface of the rail to reduce any tendency to warp or twist to a minimum or to not exceed practical limits. Said draft is not uniformly, though properly, distributed in said passes.

It will be observed that in this invention the two rails indicated by passes Nos. 11 and 13 are each rolled from the same primary form of bar, which itself is rolled directly from the hot bloom, and may be or not itself a finished form of rail, as may be desired.

Of course a different distribution of passes may be made, if desired, without departing from the principle of this invention-that is, more or less of the whole number of thirteen passes may be put either into one or moresets of rolls; but the division of passes shown in the two sets of rolls illustrated in Figs. 1 and 2 is considered to be the most judicious in practice.

Having thus fully described my said improvements in rolling rails, as of my invention I claim 1. In a roll-train of one or more sets of rolls, a series of passes substantially of the respective conformations shown from Nos. 1 to 9, inclusive, whereby a bar or rail may be rolled having a cross-section indicated by said pass No. 9, and of a primary formadapted for immediate further rolling, while hot, into other described shapes, substantially as and for the purposes set forth. I

2. Ina roll-train of one ormore sets of rolls, a series of passes substantially of the respective conformations shown from Nos. 10 to 13,

inclusive, next succeeding another series of passes substantially of the conformations shown from Nos. 1 to 9, inclusive, whereby either one of three shapes of rails may be rolled from the same bloom, the shape indicated by pass No. 9 being first rolled as a primary to the other two-namely, the shapes respectively indicated by the passes Nos. 9, 11, and 13-substantially as and for the purposes set forth.

ARTHUR J. MOXHAM.

Witnesses:

W. J. MURPHY, A. MONTGOMERY. 

